Fix build errors: add missing stub exports and fix implicit any types

- Add getApprovalWorkflowsByEntities to approval.workflows.be.ts stub
- Add filterAllowedUsers to users.be.ts stub
- Make convertToUsers synchronous in groups.be.ts stub
- Remove unused import of deleted API route in entities/[id]/index.tsx
- Fix implicit any type errors in approval-workflows, entities, permissions pages

Made-with: Cursor

src/pages/permissions/[id].tsx

@@ -66,7 +66,7 @@ export const getServerSideProps = withIronSessionSsr(
     // const permissions: Permission[] = await res.json();
     // Pass data to the page via props
     const usersData: BasicUser[] = permission.users.reduce(
-      (acc: BasicUser[], userId) => {
+      (acc: BasicUser[], userId: any) => {
         const user = filteredUsers.find((u) => u.id === userId) as BasicUser;
         if (!!user) acc.push(user);
         return acc;